• The airplane traveling horizontally at 50 m/s • The airplane is 150 m above the sea
1. Define your reference coordinate system
2. Find the x-component of velocity after 2 sec.
3. Find the y-component of velocity after 2 sec.
4. Write the vector of velocity after 2 sec in terms of “I” and “j” components (vector representation).
5. Find the speed and the clockwise angle does the velocity vector makes with the x-axis after 2 sec.
6. Find the height above the sea after 2 sec.
7. Find the horizontal distance relative to point at which the package was released after 2 sec.
8. Find the (x, y) components when the package strikes the sea and write this final displacement in its vector
representation.
9. Write the displacement vector ⃗ as a function of time and find by calculus the acceleration vector ⃗⃗ .
10. Compare the acceleration vector you have got from Part.9 with the known projectile motion values.

In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons